Oka by befriending, the little sister by matchmaking. If Kokona becomes the drama club president, she’ll be made less likeable and a himedere so I’ll make her a mind slave and then use her to kill the substitute teacher.

I finally have an opportunity to talk about the Pain Demon! So I was thinking that of all of the Easter Eggs, being able to summon the Pain Demon (and presumably the Flame Demon and Lust Demon in the full game) were some of the most serious and should stay. I realize that it’s supposed to be a funny little Easter Egg, but I feel like it’s far too powerful. Because it seems like an Easter Egg that will stay, unlike the Easter Egg modes (maybe you could unlock them through achievements in the full game), I feel like you shouldn’t be able to kill so many people so quickly, while also being simultaneously immune to Martial Arts Club members and teachers. I feel like each arm that you summon could either only attack once, and then be sucked back into the black hole-things, or each arm could drag a body part into the black hole-things after you kill someone, and pop back out in a second or two, ready to kill someone else. This would leave an opening for Martial Arts Club members, teachers, people related to the person you just murdered and delinquents an opening to attack.
Another thing that I would like to address comes from the summoning process itself. More specifically, I think that you should fix it so that you actually need to commune with the demon to summon it (just a minor bug), make sure that the ritual knife has blood on it and is in the skull (speaking of, the police shouldn’t be able to count the ritual knife as evidence if it’s in the skull. THEY’RE LITERALLY CALLED THE OCCULT CLUB AND HAVE A HUMAN SKULL AND 17 COPIES OF THE NECRONOMICON, WERE YOU EXPECTING TO NOT FIND A BLOODY RITUAL KNIFE!??!!?!??!??!?!?), and that you need to put all of the arms in the ring of candles, and then perform the club activity to summon the demon (since I don’t think that the Occult Club members run away after you kill someone that isn’t in the club… I think). That way you don’t just kill the Occult Club members to… summon the occult. Speaking of clubs and death, the doors to that club should be locked once the club disbands.
As for summoning the other two demons, I think the Flame Demon could be summoned by carrying a corpse from either electrocution or burning (gasoline and matches) into the circle (maybe just the head or the head and arms, since the Flame Demon has a fire head and hands) and performing the club activity. The ability could be flight like the Pain Demon, and every couple of seconds, a pillar of blue flame shoots up near Yandere-Chan, burning anyone that touches it (except for her of course). As for the Lust Demon… I have no idea. Maybe something to do with Matchmaking and having high reputation. The ability I also don’t know about, other than having flight (if you couldn’t tell, I really like the animation! ).